Window lock



A. T. GIBSON Jun e 23, 19

WINDOW LOCK Filed March 15, 1923 ATTORNEYS Patented June 23, 1925.

UNITED STATES 1,543,156 PATENT OFFICE. Y

ALEXANDER r. (mason, or OAKLAND, CALIFORNIA.

WINDOW LOCK.

Application filed March 15, 1923. Serial No..625,393.

ToLaZZ whom it may concern:

Be it'known that I, ALEXANDER T. GIB; soN, a citizen or the'United States, and a resident of Oakland, county'of Alameda, and State of California, have invented a new and useful Window Look, of which the following is a specification.

This invention relates to a window lock, and the object or the invention is to provide means for locking the upper and lower sashes together in a fixed relation, allowing the window to be open at the top or bottom,

or the opening may be divided between the top and bottom, but in no way can the predetermined opening be changed without changing the locking means. 7

Another object is to provide a locking means of simple construction and one that is easy to apply to a window and to change from one window to another if desired.

Other objects of the invention will appear as the description proceeds. An embodiment of the invention is shown in the accompanying drawings in which the same reference numeral is applied. to the same portion throughout.

Figure 1 is an elevation of a window showing the window sashes in locked relation, looking at the same from the inside; Figure 2 is a section on line 2-2 of Figure 1; Figure 3 is an elevation of a portion of the upper and lower window sashes showing a modified form or a lock; Figure 4 is a section on line lt of Figure 3, and Figure 5 is a sectional view of a portion of the upper window sash, showing the application of a modified form of clamp.

The numeral (1) indicates a window frame in which are mounted the upper sash (2) and lower sash with glass (4) and (5). Two U shaped clamps (6) fit over the top of the upper and lower sashes as shown and are held in place by the eye screw (7), which threadedly engages the clamp and has a bearing washer (8) swiveled on the end of the screw.

The two clamps are held in any desired spaced relation by means of different lengths of rods coupled together. In this instance the rod (9) is provided with the hook (10) at one end fitting into the eye (7) of the upper clamp, and is threaded at the other end to engage the coupling (11). Rods (12) to (14) inclusive are threaded at both ends to engage couplings (15) to (17) inclusive. The rod (18) is threaded at one end and has the eye (19) which is; in parallel relation with the eye (7 of the lower clamp screw. (20) indicates a padlock, but any other suitable means for locking the two rings together may be used.

In the modified form shown in Figures 3 and 4 screw eyes (21) and (22) screw directly into the sash and dispense with the necessity of applying the clamps described above. (23) to inclusive represent the different lengths ofrods, and (27) to (29) inclusive, the couplings. The locking means is indicated at (30).

The modified form of clamp shown in Figure 5 consists of two clamping members (31.) and having prongs (33) adapted to lie on top of the sash when drawn together by an eye bolt (34) which has a threaded end engaging a thread in the member (32). To keep the two members (31) and (32) parallel so they will grip the sash evenly a threaded rod (35) is used, this rod has a collar and a conical nut (37 While I'have shown only the preferred form of the invention, it should be understood that various changes or modifications may be made within the scope of the claims hereto attached without departing from the spirit of the invention.

I claim:

1. A window lock of the class described, comprising a screw eye secured to the top member of the upperwindow sash, a screw eye secured to the top member of the lower window sash, a jointed rod with a hook to engage said upper screw eye, and an eye to parallel said lower screw eye, means to lock said lower eyes together, and means to change the length of said jointed rod.

2. A window lock of the class described, comprising a clamp adapted to grip the upper member of an upper window sash, a clamp adapted to grip the upper member of the lower sash, each of said clamps having a pair of gripping members, an eye bolt to draw said members together, a bolt spaced from said eye bolt with a threaded end and a nut thereon, a collar on the opposite end whereby said gripping members may be kept in parallel relation with each other, means to adjustably connect saideye bolts of said upper and lower clamps, and means to lock said connection in place.

3. A window lock of the class described, comprising a clamp in two parts adapted to grip the sides of the upper member of an upper WlIlClOW sash, a clamp in two parts adapted to grip the sides of the top member of the lower sash, prongs projecting from the inner surface of each of said clamp parts, an eye bolt for each of said clamps adapted -to draw said clamp parts together, a bolt spaced from said eye bolt, said bolt having a collar on one end, the other end being threaded and having a conical nut whereby said clamp parts can be adjusted to a parallel relation With each other and the sides of the sash, an adjustable rod con necting said eye bolts of said upper and lower clamps, and means to lock said rod in place.

4. A Window lock of the character described comprising elements adapted to be secured to the upper and lower sashes of a indow and a member connecting the elements for holding the same in spaced relation, said member consisting of a plurality of rod lengths and of couplings joining the same so as to allow the member to be shortened or extended by the removal or addition of desired lengths.

ALEXANDER T. GIBSON. 

